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Method for calculating fuel combustion and heat balance in O2/CO2 atmosphere

A technology of CO2 and heat balance, applied in computing, special data processing applications, instruments, etc., can solve problems such as high economic costs

Active Publication Date: 2012-07-11
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

The concentration of CO2 in the flue gas produced by conventional air combustion is only about 15%, and the recovery of CO2 has to pay a high economic price

Method used

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  • Method for calculating fuel combustion and heat balance in O2/CO2 atmosphere
  • Method for calculating fuel combustion and heat balance in O2/CO2 atmosphere
  • Method for calculating fuel combustion and heat balance in O2/CO2 atmosphere

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Embodiment Construction

[0062] Below in conjunction with the calculation of a certain boiler in China, the present invention is described as more items. The rated evaporation capacity of the boiler is 220t / h, it operates at 80% load, the feed water temperature is 215°C, the superheated steam pressure is 9.8MPa°C, the superheated steam temperature is 540°C, the ambient temperature is 20°C, and the exhaust gas temperature is 133°C.

[0063] 1. O 2 / CO 2 The method for calculating fuel combustion and heat balance under atmospheric combustion is characterized in that it includes the following steps:

[0064] (1) Fuel combustion calculation steps

[0065] Fuel combustion calculation is based on the amount of fuel per unit volume, including: combustion calculation, flue gas characteristic calculation and flue gas enthalpy calculation, the steps:

[0066] (1)O 2 / CO 2 Calculation of the amount of atmosphere

[0067] V 0 = 1.866 ...

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Abstract

The invention discloses a method for calculating fuel combustion and heat balance in O2 / CO2 atmosphere. The method comprises the following steps of: (1) calculating fuel combustion; and (2) calculating the heat balance of a boiler. Related parameters and correlations in the traditional thermodynamic calculation method are changed, combustion calculation, flue gas characteristic calculation and flue gas enthalpy calculation in fuel combustion calculation are mainly researched, and heat balance calculation is also performed, so that a calculation formula is suitable for an O2 / CO2 combustion mode under different oxygen concentrations. The solving result of the method can be used as the reference of researching the O2 / CO2 combustion process in detail and designing the boiler by a combustion technology.

Description

technical field [0001] The invention relates to the boiler field of thermal energy engineering, in particular to methods for fuel combustion calculation and heat balance calculation under O2 / CO2 atmosphere combustion. Background technique [0002] Carbon sequestration is considered one of the best ways to reduce the buildup of greenhouse gases in the atmosphere. Obtaining a high concentration of CO2 is the premise of realizing carbon sequestration and reducing CO2 emissions. The concentration of CO2 in the flue gas produced by conventional air combustion is only about 15%, and the recovery of CO2 requires a high economic price. In order to obtain high-concentration CO2 without separation at a lower cost, a new combustion method, namely O2 / CO2 combustion technology, has been developed from the perspective of combustion. This technology uses O2 / CO2 mixed gas in the combustion system to increase the CO2 concentration in the flue gas to 95%. The use of this combustion method ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 马晓茜唐玉婷谢泽琼
Owner SOUTH CHINA UNIV OF TECH
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